John:We've been able to learn a lot of new things about bird migration, especially about how fast and how far birds move.

我们获取了很多新的信息，特别是鸟的飞行速度和距离。

youdao

John:We've been able to learn a lot of new things about bird migration, especially about how fast and how far birds move.

我们获取了很多新的信息，特别是鸟的飞行速度和距离。

youdao